Description
OpenClaw's voice-call plugin versions before 2026.2.3 contain an improper authentication vulnerability in webhook verification that allows remote attackers to bypass verification by supplying untrusted forwarded headers. Attackers can spoof webhook events by manipulating Forwarded or X-Forwarded-* headers in reverse-proxy configurations that implicitly trust these headers.
CVSS breakdown
CVSS 4.0
Attack Vector
Network
Attack Complexity
High
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Confidentiality (Vulnerable System)
None
Integrity (Vulnerable System)
High
Availability (Vulnerable System)
None
Confidentiality (Subsequent System)
None
Integrity (Subsequent System)
None
Availability (Subsequent System)
None
CVSS 3.1
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Affected products
- openclaw / voice-call0 – 2026.2.3
References
- VENDOR_ADVISORYhttps://github.com/openclaw/openclaw/security/advisories/GHSA-3m3q-x3gj-f79x
- PATCHhttps://github.com/openclaw/openclaw/commit/a749db9820eb6d6224032a5a34223d286d2dcc2f
- VENDOR_ADVISORYhttps://www.vulncheck.com/advisories/openclaw-voice-call-webhook-verification-bypass-via-forwarded-headers